<template>
  <el-container class="main-container">
    <!-- 头部区域 -->
    <el-header>
      <!-- 左侧的 logo -->
      <img src="../../assets/images/logo.png" alt="" />
      <!-- 右侧的菜单 -->
      <el-menu
        class="el-menu-top"
        mode="horizontal"
        background-color="#23262E"
        text-color="#fff"
        active-text-color="#409EFF"
      >
        <el-submenu index="1">
          <template slot="title">
            <!-- 头像 -->
            <img
              v-if="userInfo.user_pic"
              :src="userInfo.user_pic"
              alt=""
              class="avatar"
            />
            <img v-else src="../../assets/logo.png" alt="" class="avatar" />
            <span>个人中心</span>
          </template>
          <el-menu-item index="1-1"
            ><i class="el-icon-s-operation"></i>基本资料</el-menu-item
          >
          <el-menu-item index="1-2"
            ><i class="el-icon-camera"></i>更换头像</el-menu-item
          >
          <el-menu-item index="1-3"
            ><i class="el-icon-key"></i>重置密码</el-menu-item
          >
        </el-submenu>
        <el-menu-item index="2" @click="loginOutFn"
          ><i class="el-icon-switch-button"></i>退出</el-menu-item
        >
      </el-menu>
    </el-header>
    <el-container>
      <!-- 侧边栏区域 -->
      <el-aside width="200px">
        <!-- 左侧边栏区域 -->
        <el-aside width="200px">
          <!-- 用户头像, 信息 -->
          <div class="user-box">
            <img
              :src="
                userInfo && userInfo.user_pic
                  ? userInfo.user_pic
                  : defaultAvatar
              "
              alt=""
            />
            <span>欢迎 {{ userInfo.nickname || userInfo.username }}</span>
          </div>

          <!-- 左侧菜单栏 -->
          <el-menu
            :default-active="$route.path"
            class="el-menu-vertical-demo"
            background-color="#23262E"
            text-color="#fff"
            active-text-color="#409EFF"
            unique-opened
            router
          >
            <!-- trmplate标签上面不需要添加key, 因为它不会被渲染出来 -->
            <template v-for="(item, index) in menu">
              <!-- 不包含子菜单的“一级菜单” -->
              <el-menu-item
                :key="index"
                :index="item.indexPath"
                v-if="!item.children"
                ><i class="el-icon-s-tools"></i>{{ item.title }}</el-menu-item
              >
              <!-- 包含子菜单的“一级菜单” -->
              <el-submenu :key="index" :index="item.indexPath" v-else>
                <template slot="title">
                  <i class="el-icon-s-tools"></i>
                  <span>{{ item.title }}</span>
                </template>
                <el-menu-item
                  :index="menu.indexPath"
                  v-for="(menu, i) in item.children"
                  :key="i"
                  ><i :class="menu.icon"></i>{{ menu.title }}</el-menu-item
                >
              </el-submenu>
            </template>
          </el-menu>
        </el-aside>
      </el-aside>
      <el-container>
        <!-- 页面主体区域 -->
        <el-main>
          <router-view></router-view>
        </el-main>
        <!-- 底部 footer 区域 -->
        <el-footer>© www.itheima.com - 黑马程序员</el-footer>
      </el-container>
    </el-container>
  </el-container>
</template>

<script>
import { mapState, mapActions } from 'vuex'
import defaultAvatar from '@/assets/logo.png'
export default {
  name: 'Home',
  data () {
    return {
      defaultAvatar, // 引入默认头像
      menu: [] // 菜单数据
    }
  },

  computed: {
    // 映射state用户信息
    ...mapState(['userInfo', 'token'])
  },

  methods: {
    // 退出登录
    loginOutFn () {
      // 询问用户是否退出登录
      this.$confirm('您确认退出登录吗？', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      })
        .then(() => {
          // TODO：执行退出登录的操作
          // 1. 清空 token
          this.$store.commit('updateToken', '')
          // 2. 跳转到登录页面
          this.$router.push('/login')
        })
        .catch((err) => err)
    },

    // 映射action
    ...mapActions(['initUserInfo', 'initMenus']),

    // 左侧菜单数据
    async initMenus (context) {
      const res = await this.$axios.get('/my/menus')

      //   console.log(res.data)
      if (res.data.code === 0) {
        this.menu = res.data.data
      }
    }
  },

  // 触发action
  created () {
    // 判断是否登录
    if (this.token) {
      this.initUserInfo() // 用户信息
      this.initMenus() // 左侧菜单
    } else {
      this.$router.push('/login')
    }
  }
}
</script>

<style lang="less" scoped>
.main-container {
  height: 100%;
  .el-header,
  .el-aside {
    background-color: #23262e;
    // 左侧边栏用户信息区域
    .user-box {
      height: 70px;
      display: flex;
      justify-content: center;
      align-items: center;
      border-top: 1px solid #000;
      border-bottom: 1px solid #000;
      user-select: none;
      img {
        width: 35px;
        height: 35px;
        border-radius: 50%;
        background-color: #fff;
        margin-right: 15px;
        object-fit: cover;
      }
      span {
        color: white;
        font-size: 12px;
      }
    }

    // 菜单栏
    .el-submenu,
    .el-menu-item {
      width: 200px;
      user-select: none;
    }
  }
  .el-header {
    padding: 0;
    display: flex;
    justify-content: space-between;
  }
  .el-main {
    overflow-y: scroll;
    height: 0;
    background-color: #f2f2f2;
  }
  .el-footer {
    background-color: #eee;
    font-size: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
  }
}

.avatar {
  border-radius: 50%;
  width: 35px;
  height: 35px;
  background-color: #fff;
  margin-right: 10px;
  object-fit: cover;
}
</style>
